kjv@Luke:14:12@ Then said he also to him that bade him, When thou makest a dinner or a supper, call not thy friends, nor thy brethren, neither thy kinsmen, nor thy rich neighbours; lest they also bid thee again, and a recompence be made thee.
The term social networking comes to mind here as we've all been to gatherings where we are there basically to derive some benefit for ourselves. Contacts are made, business cards shared, you can help me and I can help you, possible resources and referrals are gathered.
The two teachings here really should be taken together. The feast that God has invited us to we surely cannot recompense back to Him. The feast that we invite others to should be similar. In a greater context the feast that we are inviting others to as Christians is the Lord's feast, it should not our inspiration to host such an effort in order to derive personal benefit.