So if you're going to do drawings of heads or hats, or anything else representative of people, it needs to be 2 of them.
Magnifying glass is wrong for social media marketing. It's micro, whereas social media marketing is macro.
Pen nib is wrong. Too narrow.
The hats ideas show most promise, and are the best analogy, because a social media marketing company can be considered to:
- Wear many hats
- Be wearing the hats of their clients
- Sufficiently old and reverential that hats are good/cool
- To have crossed town to represent a client (hat on appropriately)
So I'd say two hats of the detective type are ideal, at an angle to one another that's friendly yet formal.
A hat stand holding the two hats might work, too. But could get too busy looking.
Two ties is too boy's school-ish to be considered "good".
the drawing at the bottom right, whilst not appropriate for this, is very good! Will likely make for a great icon.