On my site, http://www.ringercentral.com/contact.php I have been getting ads regarding Air Conditioning installation and the like. Is there anyway I can change what ads go in the box?
Put more "ringtone" content on the page. I think its the word "problems" that is picking them up as the ads have the words "problems" and "solutions" in them. Try adding a sentence or two before the one that says "problems" and concentrate the text on your subject matter. then sit back and wait
The word "central" is your problem. Try to eliminiate it or use more keywords in content of your topic.
Sometimes also, you can get really weird ads before the mediabot correctly visits your page a few times (if it's a new page)... I had lots of ads for GPS and Stolen Vehicle Recovery on my Laptop site, and after a day or two, correct ads started being served.
Alright, I said 'Any problems with ringtones or the website - use this form. Hopefully I can get better ads? People looking for ringtones aren't looking for air-conditiong from Sears.
Put a small helpful FAQ after the Adsense ad. Then you can talk about what they should have done, should have tried and this will contain words related to phones and ringtones galore. Don't be so stingy with your words...
If you look at my London maps site you'll see that virtually the first thing google sees on every single web page is a bunch of keywords that direct the ads - a sentence or two that describes the site. If google can't work out from the page what kind of ads to display it heads on back to those keywords and serves ads based on them (I like to aim the site to genealogists etc. So short descriptive text at the top of the page should work for you.