Okay here is what I have found for other apps for sharing. You must also be taking pics with your smartphone like myself which is most of the problem cause the file is to large.
Flickr app/ I have it on my phone but it won't give me the BBcode on my phone so its pretty much useless unless I use my laptop.
Imgur /many people use it but I'm about to delete it from my phone for the second time. Nothing on there makes sense to me yet.
TinyPic/ On other forums people are using it but after I looked into them they are a Photobucket company so I'm not understanding their thing on 3rd party sharing.... pay for one site but the other is free?? Very confused so I'm not going with TinyPic cause I don't trust them. How long before they ransom that site.
Here is what I been doing since my last deer harvest thread which didn't go well posting.
I still have my Photobucket account.
1. I upload pics to my album
2. Then when they are in my album I will click on the image. Upper right hand corner click on the square with a arrow through it.
3. Then save image back to your phone and then IW will accept the pic but you have to use the saved pics not the original .
Many times after posting a pic on this site I will delete the pic from Photobucket not to clutter up the album unless I really want to keep it. Photobucket is still free you just can't share with out paying. So right now I'm sticking it to the man for free

Hope this helps. Any more questions just ask.