Shashi Tharoor, MoS, MEA, has clarified himself, saying, he was not involved in any deal he offered just an informal patronage, being an MP from the area. Lalit Modi sprincles a full dose of allegations whenever appears on camera.
But, on social networking site, both show different approach. On Twitter, both, Tharoor and Modi follow each other. Both have their verified accounts.
Shashi Tharoor has 720125 followers [at the time, this post is being written] and he follows 32 persons including Lalit modi.
New Delhi & Thiruvananthapuram have been mentioned as location for Shashi Tharoor. His bio says, "author, humanitarian, peacekeeper, columnist, former UN Under-Secretary General, now Minister of State for External Affairs, Govt of India". His website is : http://tharoor.in
Lalit Modi's bio says, "IPL Chairman & Commissioner". His website mentioned here is : http://www.iplt20.com
However, following a person can't be an interpretation of friendship or rivalry. Any one can follow any person. s/He should be a member, of course. The follower, on twitter, receives all the tweets from the person he is following.