That's interesting... I haven't noticed it change until now. I wonder if Google is testing something. I will look into it.
As far as number of ads go we actually decreased the number of ads about a month ago.
We now have less ads than HowardForums and AVSforums. The number of ads is adjusted as needed to make sure we can pay our bills. When we make enough money to keep the site going we turn the number of ads down as I hate ads too. I am happy to report that finally after 2 years the internet ad earning are finally starting to climb again. But without the ads there is no SatelliteGuys.
BTW we had one member who was a pub member who contacted me about the ads as he was upset as a Pub Member he was seeing a lot of ads... After he sent me some screen shots, I had him run MalWareBytes on his machine and he found he had over 60 things found by the program. Once he cleaned his machine he then again only saw the one ad he was supposed to see.