Friends,
as you know we have not enforced any limits on signature banner size.  But now we see some banners of 873px × 502px in size!  
Sorry but we have to end this. From 0000Z 02MAR 2011 the following rules apply:

- Мaximum signature banner size is 270px × 88px.
- Multimple banners are allowed.
- Competitors' (any aircraft developer) banners are prohibited.