Yaroslav Bogutsky

VKontakte products is a showcase with goods and services in your VKontakte group. You add products with photos, prices and detailed descriptions on the website, and they are published in the VKontakte catalog, expanding the audience of buyers through users of this social network.

VkCommerce

The plugin publishes photos and descriptions of products from your online store to the storefront in a VKontakte group.

TIgor4eg

This plugin takes tweets from public profile and posts to VK.com(VKontekte).
Plugin stores last 50 tweets. New tweets are checked every 10 minytes (depends on WP-Cron) and every time you visit settings page. All links appear unshorted. First link in tweet is parsed as attachement to VK Wall post. Twitter usernames will appear as a link to twitter profile.

Twi2VK

This plugin posts twitter statuses to VK.com

VkCommerce vs Twi2VK