All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
What has to be considered is whether or not the subject of your research (i.e. the goods or service) are permissible in Islam. If it is permissible in Islam, there is no blame in it. If not, then it is not permissible to do anything that helps market it or increase its sales, or the like, even if you do not directly sell that product, as Allaah says (what means): {And cooperate in righteousness and piety, but do not cooperate in sin and aggression.} [Quran 5:2]
Endeavoring to marketing a product and guiding people to it consists in helping its sale and purchase, so it is included in the prohibition as indicated in the verse.
Allaah Knows best.