Pay-per-click advertising is one of the most powerful marketing channels available. But it's also one of the easiest to get wrong. We've audited hundreds of Google Ads accounts, and these seven mistakes show up again and again.
1. No Conversion Tracking
This is the most fundamental mistake — and the most common. If you're not tracking conversions (phone calls, form submissions, purchases), you have no idea which keywords, ads, or campaigns are actually generating business.
Without conversion data, you're optimizing for clicks, not revenue. You might be paying $5/click for keywords that never convert while ignoring $2/click keywords that generate $200 customers.
The fix: Set up conversion tracking before spending a single dollar on ads. Track phone calls, form submissions, and any other valuable action.
2. Poor Keyword Strategy
Bidding on broad keywords
Bidding on "plumber" when you should be bidding on "emergency plumber Bethlehem PA" wastes budget on irrelevant traffic.
Ignoring negative keywords
Without negative keywords, your ad for "web design services" might show up for "free web design templates" or "web design degree programs." That's wasted spend.
Not using match types correctly
Broad match casts too wide a net. Exact match is too restrictive. Phrase match and broad match with smart bidding offer the best balance for most campaigns.
The fix: Start with specific, intent-rich keywords. Build a robust negative keyword list. Use phrase match as your default and test from there.
3. Sending Traffic to the Homepage
Your homepage isn't optimized for any specific conversion. When someone clicks an ad for "dental implants in Allentown," they should land on a page specifically about dental implants — not your homepage where they have to hunt for the information.
The fix: Create dedicated landing pages for each ad group. Match the landing page headline to the ad copy. Include a clear, prominent call-to-action.
4. Weak Ad Copy
Your ad copy has to accomplish three things in very limited space:
- Match the search intent — show the searcher you have what they need
- Differentiate — explain why they should choose you over competitors
- Drive action — include a compelling call-to-action
Generic ad copy like "Quality Service, Great Prices" doesn't accomplish any of these.
The fix: Include the target keyword in your headline. Lead with your strongest differentiator. Use specific numbers and offers. End with a clear CTA.
5. Set It and Forget It
Google Ads requires ongoing optimization. Campaigns that perform well in week one may be wasting money by week four. You need to regularly:
- Review search term reports and add negative keywords
- Pause underperforming keywords and ads
- Adjust bids based on performance data
- Test new ad variations
- Refine audience targeting
- Update landing pages based on conversion data
The fix: Commit to at least weekly account reviews, or work with an agency that manages campaigns actively.
6. Ignoring Mobile
Over half of Google searches happen on mobile devices. If your ads and landing pages aren't optimized for mobile:
- Your Quality Score drops (increasing costs)
- Mobile users bounce (wasting your click spend)
- You miss out on "near me" searches (which are overwhelmingly mobile)
The fix: Use mobile-preferred ad extensions. Ensure landing pages are fast and mobile-responsive. Include click-to-call buttons. Test your entire ad-to-landing-page experience on a phone.
7. No Remarketing
Only 2-4% of website visitors convert on their first visit. The other 96% leave and may never come back — unless you bring them back with remarketing.
Remarketing shows your ads to people who have already visited your website, keeping your brand top-of-mind as they continue researching. It's typically the highest-ROI campaign type because you're reaching people who have already shown interest.
The fix: Set up a remarketing campaign on day one. It costs very little and consistently outperforms cold traffic campaigns.
The Bottom Line
PPC isn't inherently expensive — poorly managed PPC is expensive. With proper strategy, tracking, and ongoing optimization, Google Ads delivers predictable, scalable leads at a positive ROI.