I just finally took a look at my adsense for the month of june. Income was 20% of what it was in April and May. Impressions were half of what they usually are. I can account it to World Cup, and holiday weekends. I imagine July will be alot better since there are no major US holidays for the rest of the month. Overall though...considering that I'm not on page 1 of any of the SERPS for my main keyword, I'm happy. During the month of june, I went ahead and added more content, set up a blog, started some dummy posts in the forum, set up an rss feed, and did a fairly good overhaul of SEO. So I took the downtime and expanded my base to create a stable platform in which i hope to get 100 billion impressions at a 10% CTR a day. :)
Actually, I'm ok with 10,000 impressions a day when I get there. My CTR is acceptable with that few impressions and my ads overall pay pretty nicely.
Hope everyone else is at least doing a little better then me.