There are some good sturdy wall mounts available for a range of applications. Biggest concern with wall mounts is Port Clearance and Speaker Weight, followed very closely by positioning and mount articulation.
Unfortunately, many speakers aren't adequately equipped a good way to attach them to mounts.
There are mounts like these that clap from the sides and have some measure of X,Y articulation:
Full line of TV mounting bracket, Security camera, DVR and accessories
www.videosecu.com
These don't usually require any additional hardware or screwing into the Speaker to affix.
Something sturdier like those from K&M are nice options, too, but the mounts I have require an adapter plate be attached to the cabinet:
Multi-purpose wall mount for speakers with large wall plate for heavy speakers. The mounted speaker can be swiveled to the sides and tilted up to 30°. Easy mounting by convenient hooking in and screw…
www.k-m.de
and
Universal Mounting Bracket horizontal, large with the following mounting templates: 5 x 2.75" - M8 4.25 x 2" - M6 2.75 to 3" - M6
www.k-m.de
They also have this which looks like a better version of the VideoSecu linked above:
Versatile wall mount with sheet for monitors and loudspeakers up to 33.04 lbs. The tray can be swiveled to both sides variably from +3° to -20°. Using 2 clamp screws, that are movable within…
www.k-m.de
There are always options for dealing with the challenges of setting up your room. It really becomes an issue of cost and efficacy as well as aesthetics.