Alternative style for search engines to save bandwidth

[dartho]

I wrote a style for small screen devices which requires a fraction of the bandwidth of vbulletin's default.

I also wrote an add-on which detects many small screen devices and forces the style on them.

I then modified that add-on so that it detects Yahoo spiders, and forces the lightweight style on them also.

My site isn't a big site (there are often more spiders than users on) - but I was consistently using abut 30GB bandwidth a month (slowly increasing as the site grows), this has now dropped to about 20GB. Good hosting in Australia costs good money, and the less bandwidth I waste, the better.

I'm considering doing the same for google and other spiders, but am concerned. I've read that if you display different content to Google search engines, they may drop you from their search engines. In this case, the content is the same - just the layout is different.

Any SEO/Search Engine experts have any opinion/knowledge? I experimented with Yahoo as my ranking with them was average - it's actually improved since starting this test almost a year ago, but I think that may just be coincidence.