Amazon revealed that a number of acts had received big spikes in sales immediately following well-received sets at the festival.
Top of the Amazon poll was Janelle Monae, who enjoyed a 4,928% increase in sales of her album ArchAndroid and other work following her debut appearance at the West Holts stage, taking her into the retailer's top 10.
The US singer, songwriter and dancer received rave reviews after her highly-theatrical performance backed by a 14-piece band on Saturday.
The other act enjoying more than 1,000% increases in sales over the weekend were Mumford & Sons, who were one of the big winners last year too.
In 2010, the Brit-winning band enjoyed the biggest increase in sales from the Glastonbury effect, with sales of their debut Sign No More alone boosted 47.8% week-on-week. This year looks set to be stronger.
One major factor in 2011 was that successes onstage were amplified by social networks. Telco O2 estimated that festival goers would send more than 3.6m texts from the event.
Other big winners include Primal Scream, up 920% and U2, 747%, and Gaslight Anthem, 688%.
"Many people have enjoyed the coverage of Glastonbury over the weekend and when an artist really captures the imagination, music fans will go online and order the album immediately,' said Roger Greensmith, music and MP3 manager at Amazon.co.uk Ltd. 'We have seen that for both headline artists like U2 and Coldplay as well as artists that people may not have seen before like Janelle Monae."
AMAZON GLASTONBURY TOP 10
1. Janelle Monae 4928%
2. Mumford & Sons 1400%
3. Primal Scream 920%
4. U2 747%
5. Gaslight Anthem 688%
6. Warpaint 532%
7. The Kills 510%
8. Coldplay 489%
9. The Walkmen 443%
10. Two Door Cinema Club 375%