Of course there is the problem that Gmail has an attachment file size limit of 20MB. However, if you use WinRAR to split large files up into smaller files, G2G will recognize all these files as one. Files that you add to your Gmail accounts will show up once G2G is updated every 24 hours. The reason for the 24 hour gap is simple; it's a very resource demanding process.
In it's current state, G2G is far from perfect. However, the website does remind users that it is still in beta phase. Google has not yet given any reaction to G2G, but if the service does grow then it is likely the company will be pressured into somehow blocking the service from groups such as the RIAA.
Sources:
PC Pro
G2G
Written by: James Delahunty @ 30 Nov 2005 16:54