While Google continue to power ahead in the search engine stakes, they seem to be encountering some turbulence in the advertising market with a number of high profile defections in the shape of Digg and eBay (USA). There is also talk in some quarters about “Adsense Blindness”, and the problems which this may bring to Google.

So are we really becoming immune to Adsense? Ask yourself this question - When did you last click on an Adsense Advert? Unless you are particularly new to the internet, there is a good chance that it was some time ago. Subconsciously you see the adverts and in many cases expect them, but clicking on them is another matter, although there have been no figures to support this theory - yet.

This growing mention of “Adsense Blindness” may well be part of the reason why Google have attempted to change the look and feel of their ads over the last few months. More rounded edges, slightly different shapes, these all alter the look of the advert and subconsciously they look different and may well catch your eye a little more. But is it enough?

The jury is out as to whether Adsense can continue to command such a dominant position in the online advertising market, with many advertisers looking at alternative arrangements, which on their own are not as successful as Adsense, but collectively they are starting to have an impact.

Few will remember, but Google acquired a radio advertising agency last year and while nothing has been done with this acquisition as yet, it seems that they may have alternative ideas to bring forward. Even if Adsense is losing its impact, do not write off Google - a company who constantly surprise with their new services and never seem to stand still.